coffee

A spoonful of sugar may may the medicine go down, but will it harm your chances for pregnancy?

Sugary drinks, articifical sweeteners and fertility: Princeton IVF blog
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Recent studies suggests that sugary drinks, even those with artificial sweeteners may harm the chances for pregnancy.

Although it is far from conclusive, several recent studies suggest that sweet drinks may have an adverse effect of a woman's chance for pregnancy, including...

  • Harvard doctors found that drinking one sugary drink a day can lower the success rate of IVF by 12% and more than one sweet drink a day by 16%

  • Brazilian researchers found that consuming sugary or artificially sweetened drinks reduced embryo quality and the chances for an embryo to implant. interestingly

Interestingly this effect did not occur with unsweetened coffee.

The reason for this is not totally clear, though we know both obesity and polycystic ovarian syndrome (PCOS), which are both associated with infertility and miscarriage, and associated with changes in how the body handles sugar, can lower the chances for pregnancy.

So, what should I do?

It is a good idea to keep sugary products to a minimum when you are trying to get pregnant, and to minimize artificial sweeteners such as Splenda, Equal or Sweet-and-Low. These sugar substitutes may be just as harmful as sugar itself.

Don't panic. Women who use artificial sweeteners and drink sweet drinks still get pregnant all the time, even if the chances are a little lower. There are many factors that go into your fertility, so it is far from clear that consuming these drinks is actually harms your chances for pregnancy.

Caffeine, vitamins and miscarriage

Can caffeine affect your miscarriage risk: Princeton IVF blog
Caffeinated beverages and risk of miscarriage

It may be time to cut back on coffee before pregnancy...

An new study from the National Institutes of Health suggests that the morning pilgrimage to Starbucks, Dunkin Donuts or your favorite coffee may not be such a good idea, at least if you or your partner are trying to get pregnant.  In the past, it was thought that small amounts of caffeine intake were not an issue, but researchers have now found that the as little as 2 drinks a day may almost double the risk of a pregnancy ending in miscarriage. Furthermore, this risk was present not just during pregnancy but when a woman drinks caffeinated beverages even several months before conception, and was even true when the male partner consumes caffeinated drinks. The risk of miscarriage was just as high when the male partner used caffeine.

So, does that mean caffeine causes miscarriages?

Not necessarily. The study was small so this could just be a statistical fluke and it is quite possible that people who drink more coffee have other unrelated issues that make them more prone to miscarriage.  Still, prudence would suggest  avoiding caffeinated beverages such as coffee, tea and soda are a good idea when planning pregnancy.

But, there is a bright side to the study...Vitamins.

It turns out that women who took multivitamins actually had a lower miscarriage risk, by about 50 %.